#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2019 crane <crane@gosun>
#
# Distributed under terms of the MIT license.

"""
https://www.lintcode.com/problem/update-bits/description
"""

class Solution:
    """
    @param n: An integer
    @param m: An integer
    @param i: A bit position
    @param j: A bit position
    @return: An integer
    """
    def updateBits(self, n, m, i, j):
        # write your code here


def test():
    s = Solution()

def main():
    print("start main")
    test()

if __name__ == "__main__":
    main()
